A286 galling
A286 galling
(OP)
Will I still have galling problems with A286 on A286 if they are both aged to AMS 5737?
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RE: A286 galling
And is there any lubrication?
It would be better to have dissimilar metals, but at higher strengths it makes less of a difference.
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Plymouth Tube
RE: A286 galling
RE: A286 galling
RE: A286 galling
http://materion.com/Products/Alloys/ToughMetCopper...
RE: A286 galling
If you need a corrosion resistant alloy with good strength (Fbru>220ksi) and toughness that is also suitable for LOx service (<-297degF), a better choice might be 718 Inconel in a solution treated/aged condition. If galling is still a concern with 718 there are a couple of LOx compatible coatings you can apply to the surface of one or both parts. You can use thin dense chrome which is extremely hard. Or you can consider using Vitrolube, which provides some amount of lubricity but also has limited (around 50ksi) surface contact pressure capability. Vitrolube is commonly used to coat the sliding contact surfaces of components (balls, sockets, bushings, shafts, etc.) inside the LOx ducts on space launch vehicles.
Hope that helps.
Terry
RE: A286 galling
don't see promoted combustion or impact testing in MAPTIS for ToughMet 3TS. Do you know where I could find data on this?
RE: A286 galling